Honestly, I felt the same way when I first heard about it. Then again, I was an angsty teenager back then, so I had an excuse. But what exactly irks you? Are you a Disney fan but hate Final Fantasy? Are you a Final Fantasy fan(tasy) but hate Disney? Or do you simply dislike what you consider to be unnecessary mashups? For case #1, you probably aren't interested in Japanese RPGs, so there's no reason for you to be mad in the first place, since it's out of your wheelhouse. For case #2, do you hate Disney in particular, or just kiddy things? For case #2.a, I guess that's a fair stance, but there's definitely different quality levels in the various Disney series and franchises, so you shouldn't let bad apples spoil the bunch. For case #2.b, I can understand. While I love JRPGs, I absolutely hate stories where friendship and/or love conquers all. KH definitely fits that, but the combat and nostalgia factor are decent enough for me to enjoy it. For case #3, while some things may seem at odds with each other, together they could create something great, like chocolate and peanut butter forming Reese's. KH isn't necessarily great, but I don't think it's as vomit-inducing as you say it is.